Changeset e1d6983 in sasmodels

Timestamp:

Aug 4, 2016 3:56:16 PM (8 years ago)

Author:

Paul Kienzle <pkienzle@…>

Branches:

master, core_shell_microgels, costrafo411, magnetic_model, release_v0.94, release_v0.95, ticket-1257-vesicle-product, ticket_1156, ticket_1265_superball, ticket_822_more_unit_tests

Children:

bd49c79

Parents:

38ce0ab

Message:

note in comments that cephes erf is faster on all current platforms

File:

• sasmodels/kernel_header.c (modified) (1 diff)

sasmodels/kernel_header.c

@@ -14 +14 @@
 #    define SINCOS(angle,svar,cvar) do {const double _t_=angle; svar=sin(_t_);cvar=cos(_t_);} while (0)
 #  endif
-   // Intel CPU on Mac gives strange values for erf(), so maybe don't use it
+   // Intel CPU on Mac gives strange values for erf(); also on the tested
+   // platforms (intel, nvidia, amd), the cephes erf() is significantly
+   // faster than that available in the native OpenCL.
    #define NEED_ERF
    // OpenCL only has type generic math